Vista and objects in HTML

Vista and objects in HTML

Hello all,
I'm having a problem getting IE7 to recognize the object tag in web pages.
The pages display fine if I go to a computer running XP, but when I use Vista I either get a black box where the object should be on screen or nothing at all.
Running in compatability mode dosen't seem to help either.
Is there a setting somewhere in Vista I have to turn on or off before object tags can be recognized?

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